Preflop: I think this is a clear 3bet preflop, especially when he makes it so large to 4BB (more dead money to take down, less favourable for calling), and also his steal range from CO is so wide at 28%.

Flop: I think this guy cbets most of his range on this not too wet board. We have backdoor diamonds, Ace high is often the best hand, and he barrels our outs to rep AK himself.

But still we can just c/c 2 streets with Ace high for sure on some blank cards. And rmb that he always barrels your Ace and King and will probably 3barrel it on the River too so you get a lot of implied odds.